Upside down numbers

Upside down numbers

https://www.codewars.com/kata/upside-down-numbers/train/javascript

Consider the numbers 6969 and 9116. When you rotate them 180 degrees (upside down), these numbers remain the same. To clarify, if we write them down on a paper and turn the paper upside down, the numbers will be the same. Try it and see! Some numbers such as 2 or 5 don't yield numbers when rotated.

Given a range, return the count of upside down numbers within that range. For example, solve(0,10) = 3, because there are only 3 upside down numbers >= 0 and < 10. They are 0, 1, 8.

More examples in the test cases.

Good luck!

Codewars Kita (Upside down numbers)